Fig. 1. CD95 and CD95L expression in human GIC in vitro.
A, B S-24, ZH-161, ZH-305, or T-325 human GIC were assessed for expression of CD95 or CD95L mRNA by RT-qPCR using primers targeting all known protein-coding CD95 or CD95L transcript variants and ARF1 as an internal control. Phorbol myristate acetate (10 ng/ml) and ionomycin (500 ng/ml)-activated peripheral blood mononuclear cells (PBMC) served as a positive control for CD95L expression detection. RT-qPCR data are expressed as mean and SD. a.t., above the threshold, indicates CT values above the reliability threshold of 32. C, D Cell surface protein levels were assessed by flow cytometry. Specific fluorescence indexes (SFI) were calculated by dividing the median fluorescence intensities of the experimental antibody and the isotype control.